Tool for recutting valve-seats.



H. H. CHRISTENSEN.

TOOL FOR RECUTTING VALVE SEATS.

APPLICATION FILED FEB. 10. m7.

1 271,854., Patented July 9, 1918'.

HOWARD H. onisrnivsnn, or

t l TOOL FOR BEQUTTING YALVE-SEATS,

. Application filed February 10, 1917. Serial K911473925.

specification.

The present invention relates to a tool for recutting the flat valve seats such as are found in faucets used in connection with bath-tubs, wash-bowls, etc. 7 l c The principal objects of the invention are,

.to produce a tool of the character specified which is cheap and simple of operation, which can be readily and quickly fixed in position to the faucet body; which is adaptable for use with various sized faucets; and which will have means for exerting a positive downward feeding action upon the cutting tool to keep it in position upon the valve seat. 1

Further objects of the invention are, to provide means for centering the tool during the valve cutting operation; to arrange the.

mounting for the tool so that the tool is freely revoluble therein; and to arrange the cutting member of the tool so .that it can be used either as a cutter or reamer.

The invention further consists in the features of construction and combination of parts hereinafter described and claimed. J

In the drawings:

Figure 1 is a longitudinal section through the tool of the present invention; Fig. 2, a perspective detail of the cutting implement; Fig. 3,across-section of the cutting im plement, showing the centering plug removed and positioned below; 3

Fig. 4, a detail ot a part of the appliance for securing the tool to the faucet body and Fig. 5, an elevation of one of the members employed for feeding the tool during the cutting operation. j

In the art to which the present invention relates, there is a certain flat, valve seat in the construction of faucets, upon which a disk washer is seated. It is necessary to the proper operation of the faucet that this seat be kept in true conditlon to receive the washer, and from time to time the seat must be recut to maintain it fiat.

In the present invention, in addition to other alleged novel features, mechanical means are provided,'which can be quickly Specification of Letters Patent.

cmcaco, itmifoisfassrcuoa 'I'O CHARLES A. DBEIER,

or cnroaeo, rumors,

Patented-Jul 9,1918.

and easily operated, to maintain mechanically the downward pressure upon the cutting tool, thus eliminating'the exertion of direct pressureon the tool by the user, and

only requiringupon the part of the-user,

the necessary power to turn the tool. This renders the tool more easily operated because of the fact that the operator is not requlred to manually place the pressure on the tool necessary to keep it in cutting engagement. I 7 V Referring now to the drawings, the device is shown in connection witha faucet body 6, which may be of any suitable style and. size; and in.the interior of this body is a fiat valve seat 7 which is theone upon which the cutting tool is to operate. The cutting tool consists of a rod 8, the lower end of which is adapted to be threaded or otherwise connected to a cutting member 9. This cutting member, in the. form shown, has horizontally disposed teeth 10 formed upon one surface for cutting the valve seat 'I flat. The

body of the tool is of tapering formation,

as shown, and is further provided with vertically extending teeth 11, whereby this portion of the tool can serve asa reamer.

Withthe tool in the position of Fig; 1, the horizontal teeth 10are brought into play, and it is being used as a valve seat cutter. If turned end for end, then the small portion of the bodywould be downward, the verti-' cal teeth would bein operative position, and it could be used as a reamer.

A plug 12 is provided, adapted to be attached to the tool and serve as a centering member therefor. Thetool is provided with two threaded openings 13, so as to enable a reversal when it is-desired to change from a valve cutter to a reamen or vice versa.

The rod 8 of the tool is supported by means of a holder, which will be given the general numeral 14. This holder consists of a part 15 for afiixing it to the body of the faucet, a part 16, which is adapted to manipulate the part 15 to force it in place, and a part1'7, which has to do with the mechanical maintaining of downward pressure on the tool. 2

The part 15 comprises a body 18 of rubber or other compressible substance. Extending through this rubber is a sleeve 19 formed with a flange 20 on its lower end, which sleeve for clearness will be termed the lower exteriorly threaded sleeve. The upper end of, the sleeve is exteriorly threaded as at 21 and is formed with, a groove 22, which receives a prong or projection 23 on a holder 24. Adapted to be advanced over the threaded portion 21 of the sleeve 19 is a sleeve 25,

terminating in "a hand grip 26, which sleeve 25 for clearness will be termed the intermediate, interiorly threaded sleeve.

In operation, the member is placed in position withthe compressible body 18 in the open upper end of the faucet body. The hand grip 26 is manipulated by the operator to turn the sleeve 25, which will draw the sleeve 19 upward, so that the flange 20 will engage with the lower face of'the compressible body. The holder 24 has been pre-' viously placed in position, and the operator, by grasping the finger-piece 27 of the holder 24, will preventthe sleeve 19 from'turning as the handle 26 is rotated. This will insure the sleeve 19 being drawn upward as the handle is turned. The holder will press against the upper portion of the compressible body and will be held against upward movement by the end of the sleeve 25. Thus, the compressible body 18 will be positioned between the holder 24, which is held against upward movement, and the flange 20, which is advanced upwardly by the movement of- 'the sleeve 19. The-compressible body will thus be compressed and expanded horizontally and brought firmly against the inner walls of the open end of the faucet body, so that it is held securely in place.

The interior face of the sleeve contains a threaded surface 28, which receives the threads upon a sleeve 29 attached by ribs 30. or otherwise, to a disk-like member 31, which sleeve 29 for clearness will be termed the upper, exteriorly threaded sleeve. This disk-like member forms a hand grip and preferably has a knurled face, as in Fig. 5,

and is provided with a central opening 32,

through which extends a sleeve 33 having a lower head 34 and a nut 35 on its upper end.

The sleeve 29, ribs 30, and disk-like member 31 constitute a chambered member, which is the part 17 heretofore referred to. The lower head 34 rests inside of the chambered member. and when the tool is operated, said head is brought into abut-tin engagement with the under face of the dis -like member 31 to obtain downward pressure on the tool. The sleeve 33 is threaded upon a threaded surface 36 upon the upper end of the rod 3, and upon the extreme upper end of the rod is a hand-grip 37. v

The operation is as follows:

The parts 17. 16. and 15. together with the rod 8 and operating member are first assembled together and the tool placed in position ith respect to the faucet. The expansible body 18 is then expanded and the holder portion secured in place at the upper end of the faucet body. The tool is then lowered within the valve body until the acting surface of the. cutting member rests upon the valve seat. Then, by a manipulation of the member 17, or of the sleeve 33, the said member and sleeve are brought into a position where the head 34 will engage with the under face of the disk 31. Then, by grasping the hand grip 31 the operator can rotate the member 17 which will advance downward by reason of its threaded engagement between the upper sleeve 29 and the intermediate sleeve 22, and such downward travel will exert pressure on the head 34 and sleeve 33, which'latter is connected to the rod 8, and thus a downward pressure is exerted on said rod. This downward pres-.

sure will bring the cutting member 9 into hard engagement with the valve seat, to carry on the cutting operation. The screw threads on the sleeve 33 and rod 8 are formed to have a good tight fit, which will be suflicient to overcome the friction when the ring 31 and head 34 contact, thus allowing sleeve 33 to revolve freely with the rod 8, whereby there will be no feeding downward of the stem 8 by'reason of a relative rotative movement between the said stem and the sleeve 33.

In this manner the cutting end of the tool can be kept in firm engagement with the work by simply manipulating the hand grip 31,- and the hand of the operator need only be used for turning the rod 8 through the hand-grip 37, and no downward pressure on this hand-grip need be exerted. In this way the tool can be readily operated, even under adverse circumstances.

It is to be noted that the rod 8 at all times has a free turning movement in theholder, although the holder exerts the necessary downward pressure for the cutting.

The parts 15, 16 and 17 give an elongated bearing for the'rod 8, which is disposed longitudinally of said rod, thereby preventing the rod from getting out of a straight up and down position during the cutting operation. This is important, because the rod, if slanted, would position the cutting tool crooked and cause an uneven cutting.

I claim:

1. In a tool for recutting valve seats, the combination of a cutting member, a rod attached to said member, a holder for the rod in which it has a free rotative movement, a plug of expansible and yieldable material arranged to be inserted upon the inside of the open upper end of the vah'e casing, means forming a part of said holder for expanding said plug to bring it into engagement with the inner wall of said upper end of the valve casing to lock the holder in place. and means forming a part of said holder and adapt-ed by adjustment to menamesacombination of a cutting member, a rod at tachedto said member, a holder for the we in which it has a free rotative movement, an

expansible and yieldable member forming a part of said holder and adapted to bein- 1 brought into engagement" with the inner wall of said upper end of the valve casing I to lock the holder in place, and means associated with said holder and adapted by adjustment to mechanically exert. a downward pressure on the rod to feed the cutting member into cutting position, substantially as 7 described.

3. In a tool for recutting valve seats. the combination of a cuttingmember; a r0 attached to said ,member, a holder for the rod in which it has free rotative movement, said holdebcomprising lower, intermediate and upper sleevemembers all arranged concentric with the rod and providing an elongated bearing for the rod, inwhich the rod has a free turning movement, ex ansible means associated with the lower s eeve, a threaded connection between the lower and intermediate sleeves whereby when said intermediate sleeve is rotated, said lower sleeve is moved to expand said expansible means and lock the holder in place upon the valve casing, a threaded connection between the upper and intermediate sleeve, a head on the rod, a headconnected to the intermediate sleeve, and said heads whenbrought into contact placing a downward feeding pressure on the "rod, substantially as deb ea 4. In a tool for recuttingvalve seats, the

combinationof a cutting member, a rod at- I tached to said member, a holder for the rod in which it has free rotative movement, said holder comprising' lowe'r intermediate and upper sleeve members all trio with the rod and providing an elongated bearing for the rod, in which the rod has I a free turning movement, expansible means associated'with the lower sleeve, a threadyd connection between the lower and intermediate sleeves whereby when said intermediate sleeve is rotated, said lower sleeve is moved to expind said expansible means and .lock theholder in place upon thevalve casing, a holder-member engaging with the lower sleeve to prevent tu of said arranged concen- I sleeve when the intermediate sleeve isrotated, a thred, connection between the upper and intermediate sleeve, ahead on the rod, a head conn to the intermediate sleeve, and said heads when brought into contact placing a downward feeding pressure on the rod, substantially as described. v

5. In a recutting tool for.- valve seats, the combination of a cutting member, a rod secured to said member, a holder for the rod comprising lower, intermediate and upper sleeves arranged concentric withthe rod and forming an elongated bearing therefor, in

which the rod has a freeturning movement, expansible means carried by the lower sleeve, a threaded surface on the exterior of the upper part of the lower sleeve,- an interior threaded surface on the lowerand upper parts of the intermediatfl: sleeve,

with the threadedsurface on the lower sleeve meshing w i thf the lower threaded surface on the intermediate sleeve, an exterior threaded surface on the'upper sleeve meshing with the upper threadedsurface on the intermediate sleeve, a head attached to the upper sleeve, ahead attached to the rod, said intermediate sleeve when rota moving the lower sleeve through the threaded engagement therewith to expand the ex,- pansible means and secure the holder t0 the valve,;said upper sleeve when rotated mov-,. v

with respect to the intermediate sleeve by the threaded connection therewith and bringing the head on the upper sleeve into engagement with the head on the n to exert a downward feedin pressure on the rod, substantially as descnbed.

6. In a tool for recutting valve seats, the combination of a cutting'member, a rod se-, cured to'the cutting member, lower, intermediate and uppersleeves arranged concentric with the rod and forming an elongated ringfor the rod, in which it has a turning fit, expansible means carried by \the A lower sleeve, a threadedrconnection between the lower andintermediate sleeves, a hand grip on the intermediate sleeve to permit turning. thereof, whereby the lower sleeve is moved to expand the expansible means and lock the tool to the valve casing, a

threaded connection between the intermediate .and uppersleeves, a hand connected to the upper sleeve and cpnstltuting a head, a head on the valve stem, and said upper sleeve when turned moving onthe threaded surface of the intermediate sleeve to bring the said heads into contact and ex art a downward feeding pressure on the rod, substantially as described. w 

